各规格螺纹外径.碾造径.下孔径对照表

螺丝攻下孔径对照表上限下限上限下限上限下限上限下限上限下限M1.0*0.250.750.7850.729M1.0*0.20.800.8210.783NO.1 UNC64 1.55 1.582 1.425NO.0 UNF801.25 1.305 1.1821/16W60 1.15 1.2 1.1M1.1*0.250.750.8850.829M1.1*0.20.900.9210.883NO.2UNC56 1.80 1.871 1.695NO.1 UNF721.55 1.612 1.4743/32W48 1.8 1.9 1.7M1.2*0.250.950.9850.929M1.2*0.2 1.00 1.0210.983NO.3 UNC48 2.10 2.146 1.941NO.2 UNF641.85 1.912 1.7561/8W40 2.6 2.65 2.60M1.4*0.25 1.10 1.142 1.075M1.4*0.2 1.20 1.2211.183NO.4 UNC402.30 2.385 2.157NO.3 UNF562.10 2.1972.0255/32W323.2 3.25 3.20M1.6*0.35 1.25 1.321 1.221M1.6*0.21.40 1.421 1.383NO.5 UNC402.60 2.697 2.487NO.4 UNF582.402.458 2.2713/16W243.6 3.75 3.25M1.7*0.45 1.35 1.4211.321M1.8*0.2 1.60 1.621 1.583NO.6 UNC322.80 2.8952.642NO.5 UNF442.70 2.740 2.5511/4W20 5.0 5.1 5.0M1.8*0.45 1.45 1.521 1.421M2.0*0.25 1.75 1.785 1.729NO.8 UNC323.40 3.530 3.302NO.6 UNF402.90 3.022 2.8205/16W18 6.5 6.6 6.5M2.0*0.5 1.60 1.679 1.567M2.5*0.35 2.20 2.221 2.121NO.10 UNC243.90 3.962 3.683NO.8 UNF363.50 3.606 3.4043/8W167.98.07.9M2.2*0.6 1.75 1.838 1.713M3.0*0.35 2.70 2.721 2.621NO.12 UNC244.50 4.597 4.344NO.10 UNF324.10 4.165 3.9637/16W149.39.49.3M2.3*0.6 1.90 1.979 1.867M3.5*0.35 2.20 3.221 3.1211/4 UNC205.10 5.257 4.979NO.12 UNF284.60 4.7244.4961/2W1210.510.710.5M2.5*0.45 2.10 2.138 2.013M4.0*0.5 3.50 3.599 3.4595/16 UNC18 6.60 6.731 6.4011/4 UNF285.50 5.588 5.3609/16W1212.112.312.0M2.6*0.45 2.20 2.238 2.113M4.5*0.5 4.00 4.099 3.9593/8 UNC168.008.1537.7985/16 UNF246.907.035 6.7825/8W1113.513.713.5M3.0*0.5 2.50 2.599 2.459M5.0*0.5 4.50 4.599 4.4597/16 UNC149.409.5509.1443/8 UNF248.508.6368.3823/4W1016.516.716.5M3.0*0.6 2.40 2.440 2.280M5.5*0.5 5.00 5.099 4.9591/2 UNC1310.8011.02310.3927/16UNF209.9010.0339.7297/8W919.719.519.3M3.5*0.6 2.90 3.010 2.850M6.0*0.75 5.30 5.378 5.1889/16 UNC1212.2012.44611.9891/2UNF2011.5011.60711.3291W822.022.422.0M4.0*0.7 3.30 3.422 3.242M7.0*0.75 6.30 6.378 6.1885/8 UNC1113.6013.86813.3869/16 UNF1812.9013.08112.751 1 1/8W724.825.024.8M4.0*0.75 3.25 3.326 3.106M8.0*1.07.007.153 6.9173/4 UNC1016.5016.84016.3075/8 UNF1814.5014.68114.351 1 1/4W728.028.328.0M4.5*0.75 3.80 3.878 3.688M8.0*0.757.307.3787.1887/8 UNC919.5019.76119.1773/4 UNF1617.5017.67817.323 1 3/8W630.330.530.3M5.0*0.8 4.20 4.334 4.134M9.0*1.08.008.1537.917 1 UNC822.2022.60621.9717/8 UNF1420.5020.67520.270 1 1/2W633.533.833.5M5.0*0.9 4.10 4.170 3.930M9.0*0.758.308.3788.188 1 1/8 UNC725.0025.34924.638 1 UNF1223.2023.57123.114 1 5/8W535.736.035.7M6.0*1.0 5.00 5.153 4.917M10.0*1.258.808.9128.647 1 1/4 UNC728.2028.52427.813 1 1/8 UNF1226.5026.74626.289 1 3/4W539.039.239.0M7.0*1.0 6.00 6.153 5.917M10.0*1.09.009.1538.917 1 3/8 UNC630.8031.11530.353 1 1/4 UNF1229.5029.92129.464 1 7/8W41/241.541.841.5M8.0*1.258.80 6.912 6.647M10.0*1.759.309.3789.188 1 1/2 UNC634.0034.29033.528 1 3/8 UNF1232.8033.09632.6392W4 1/244.745.044.7M9.0*1.257.807.9127.647M10.0*0.59.509.5209.400 1 3/4 UNC539.5039.82738.964 1 1/2 UNF1236.0036.27135.814 M10.0*1.58.508.7768.376M11.0*1.010.0010.1539.9172UNC4 1/245.2045.59334.679M11.0*1.59.509.6769.376M11.0*0.7510.3010.37810.188M12 .0*1.7510.3010.44110.106M12.0*1.510.5010.67610.376M14.0*2. 012.0012.21011.836M12.0*1.2510.8010.91210.647M16.0*2.014.0 014.21013.835M12.0*1.011.0011.15310.917M18.0*2.515.5015.74 415.294M14.0*1.512.5012.67612.376上限下限使用绞刀不使用绞刀M20.0*2.517.517.74417.294M14.0*1.013.0013.15312.917SM1/6-80 1.30 1.34 1.181/16PT28 6.1 6.2 6.244 6.384M22.0*2.519.519.74419.294M15.0*1.513.5013.67613.376S M5/64-64 1.60 1.68 1.471/8PT288.18.28.2498.388M24.0*3.021.021.25220.752M15.0*1.014.0014.15313.917SM3/32-1002.15 2.18 2.051/4PT1910.711.010.96211.174美制粗牙（UNC ）美制细牙（UNF ）2级螺纹内径英制粗牙（W ）螺纹下孔直径下孔径称呼尺寸下孔径称呼尺寸下孔径2级螺纹内径称呼尺寸下孔径公制粗牙（M ）公制细牙（MF ）2级螺纹内径称呼尺寸下孔径称呼尺寸下孔径称呼尺寸下孔径有效螺纹部的最小内径基准位置的最小内径针车牙(SM)规格下孔径下孔径管用螺纹PT(Rc)M27.0*3.024.024.25223.752M16.0*1.514.5014.67614.376SM 3/32-56 1.90 2.03 1.793/8PT1914.214.514.44814.658M30.0*3.526.026.77126.211M 16.0*1.015.0015.15314.917SM1/8-44 2.55 2.73 2.431/2PT1417.618.017.97918.263M33.0*3.529.529.77129.211M 17.0*1.515.5015.67615.376SM1/8-40 2.50 2.68 2.353/4PT1423.023.523.37823.663M36.0*4.032.032.27031.670M 17.0*1.016.0016.15315.917SM9/64-40 2.90 3.08 2.751PT1129.029.529.45829.822M39.0*4.035.035.27034.670M18 .0*2.016.0016.21015.835SM11/64-40 3.70 3.87 3.54 1 1/4PT1137.538.037.97638.339M42.0*4.537.537.79937.129M18.0 *1.516.5016.67616.376SM3/16-32 3.95 4.14 3.73 1 1/2PT1143.444.043.86944.232M45.0*4.540.540.79940.129M18.0*1.017.0017.15316.917SM3/16-28 3.80 4.06 3.582PT1154.955.555.41255.844M20.0*2.018.0018.21017.835SM7/32-32 4.70 4.94 4.53M20.0*1.518.5018.67618.376SM15/64-28 5.00 5.25 4.77M20.0*1.019.0019.15318.917SM1/4-40 5.70 5.86 5.53M22.0*2.020.0020.21019.835SM1/4-28 5.40 5.64 5.17上限下限M22.0*1.520.5020.67620.376SM1/4-24 5.25 5.53 4.98 M1*0.250.900.920.86M22.0*1.021.0021.15320.917M1.1*0.25 1.00 1.020.96M24.0*2.022.0022.21021.835M1.2*0.25 1.10 1.12 1.06M24.0*1.522.5022.67622.376M1.4*0.30 1.25 1.30 1.24M24.0*1.023.0023.15322.917M1.6*0.36 1.45 1.49 1.41M25.0*2.023.0023.21022.835上限下限上限下限上限下限M1.7*0.35 1.55 1.59 1.51M25.0*1.523.5023.67623.376NO.1 -64 1.70 1.73 1.641/16PF28 6.7 6.843 6.5611/16PS28 6.5 6.632 6.490M1.8*0.35 1.65 1.69 1.61M25.0*1.024.0024.15323.917NO.2 -56 2.00 2.04 1.941/8PF288.78.8488.5661/8PS288.58.6378.495M2*0.4 1.801.87 1.78M26.0*1.524.5024.67624.316NO.3 -482.25 2.342.231/4PF1911.711.89011.4451/4PS1911.411.54911.341M2.2*0.45 2.00 2.05 1.96M27.0*2.025.0025.21024.835NO.4 -40 2.55 2.64 2.503/8PF1915.215.39514.9503/8PS1915.015.05414.846M2.3*0.4 2.10 2.17 2.08M27.0*1.525.5025.67625.376NO.5 -40 2.90 2.97 2.831/2PF1419.019.17218.6311/2PS1418.518.77318.489M2.5*0.45 2.30 2.35 2.26M27.0*1.026.0026.15325.917NO.6 -32 3.15 3.25 3.085/8PF1421.021.12820.5873/4PS1424.024.25923.975M2.6*0.45 2.40 2.45 2.36M28.0*2.026.0026.21025.835NO.8 -32 3.80 3.91 3.743/4PF1424.524.65824.1171PS1130.230.47130.111M3*0.5 2.75 2.84 2.73M28.0*1.526.5026.67626.376NO.10 -24 4.35 4.48 4.257/8PF1428.228.41827.877 11/4PS1138.839.13238.772M3.5*0.6 3.20 3.313.18M28.0*1.027.0027.15326.917NO.12 -24 5.00 5.144.911PF1130.530.93130.291 1 1/2PS1144.845.02544.665M4*0.7 3.65 3.77 3.62M30.0*3.027.0027.25226.7521/4 -20 5.75 5.94 5.66 1 1/8PF1135.235.57934.9392PS1156.556.83656.476M4.5*0.75 4.15 4.26 4.09M30.0*2.028.0028.21027.8355/16 -187.307.487.17 1 1/4PF1139.239.59238.952M5*0.8 4.60 4.74 4.57M30.0*1.528.5028.67628.3763/8 -168.809.018.67 1 1/2PF1145.045.48544.845M6.0*1.0 5.50 5.68 5.46M30.0*1.029.0029.15328.9177/16 -1410.3010.5210.13 1 3/4PF1151.051.42850.788M7.0*1.0 6.50 6.68 6.46M32.0*2.030.0030.21029.8351/2 -1311.8012.0711.642PF1157.057.29656.656M8.0*1.257.357.597.32M32.0*1.530.5030.67630.376M9.0*1. 258.408.598.32M33.0*3.030.0030.25229.752M10.0*1.59.259.519. 19M33.0*2.031.0031.21030.833M12.0*1.7511.1011.4311.05M33. 0*1.531.5031.67631.376M14.0*2.013.1013.2512.90M35.0*1.533.5033.67633.376上限下限规格下孔径无屑丝攻公制粗牙(M)管用螺纹PF(G)无屑丝攻美制粗牙（UNC ）规格下孔径下孔径下孔径无屑丝攻美制粗牙（UNF ）规格下孔径称呼尺寸下孔径美制管用螺纹下孔径( )内为英制尺寸NPTNPS称呼尺寸下孔径A 、B 级内螺纹内径管用螺纹PS(Rp)称呼尺寸下孔径A 、B 级内螺纹内径M16.0*2.015.1015.2614.90M36.0*3.033.0033.25232.752NO.0 -80 1.40 1.42 1.35使用绞刀不使用绞刀M18.0*2.516.9017.0616.62M36.0*2.034.0034.21033.835NO.1 -72 1.70 1.74 1.661/16-27 6.10(0.246.25(0.246)6.35(0.250)M20.0*2.518.9019.0718.62M36.0 *1.534.5034.67634.376NO.2 -64 2.00 2.06 1.971/8-278.33(0.328.43(0.332)8.74(0.344)M38.0*1.536.5036.67636.376NO.3 -56 2.30 2.37 2.271/4-1810.72(0.411.13(0.438)11.13(0.438)NO.4 -48 2.60 2.67 2.563/8-1814.27(0.514.27(0.562)14.68(0.578)NO.5 -44 2.90 2.99 2.861/2-1417.48(0.617.86(0.703)18.26(0.719)上限下限NO.6 -40 3.20 3.30 3.163/4-1422.63(0.823.01(0.901)23.42(0.922)W1/16-60 1.40 1.42 1.32NO.8 -36 3.85 3.94 3.781-11 1/228.58(1.128.98(1.144)29.36(1.156)W3/32-48 2.10 2.18 2.04NO.10 -32 4.45 4.57 4.40 1 1/4-11 1/237.31(1.437.69(1.484)38.10(1.500)W1/8-40 2.85 2.93 2.77NO.12 -28 5.05 5.19 4.99 1 1/2-11 1/243.66(1.744.04(1.734)44.45(1.750)W5/32-32 3.55 3.66 3.461/4 -28 5.95 6.06 5.862-11 1/255.58(2.155.96(2.203)56.36(2.219)W3/16-24 4.25 4.36 4.085/16 -247.407.597.36 2 1/2-865.89(2.566.68(2.625)67.46(2.656)W7/32-24 5.05 5.15 4.883/8 -249.009.188.95W1/4-20 5.75 5.86 5.541/2 -2012.1012.2912.01W5/16-187.307.407.03W3/8-168.808.928.51W7/16-1410.3010.429.95W1/2-1211.7511.8911.34 规格下孔径下孔径无屑丝攻英制粗牙(W)NPS 称呼尺寸。

螺纹与孔径对照表
螺纹（Thread）和孔径（Aperture）是两个不同的概念，在不同的领域有着不同的定义和用途。

以下是一些常见的螺纹与孔径对照表，但请注意具体的对应关系可能因应用场景和标准的不同而有所差异。

1. 螺纹与内孔：
- M2.5：2.5mm 孔径
- M3：3.0mm 孔径
- M4：4.0mm 孔径
- M5：5.0mm 孔径
- M6：6.0mm 孔径
- M8：8.0mm 孔径
- M10：10.0mm 孔径
- M12：12.0mm 孔径
- M14：14.0mm 孔径
- M16：16.0mm 孔径
- M20：20.0mm 孔径
2. 螺纹与外径：
- 1/4-20：1/4 英寸外径，20 TPI（每英寸的螺纹数）
- 3/8-16：3/8 英寸外径，16 TPI
- 1/2-13：1/2 英寸外径，13 TPI
- 5/8-11：5/8 英寸外径，11 TPI
- 3/4-10：3/4 英寸外径，10 TPI
- 1-8：1 英寸外径，8 TPI
- 1 1/4-7：1 1/4 英寸外径，7 TPI
- 1 1/2-6：1 1/2 英寸外径，6 TPI
- 2-4 1/2：2 英寸外径，4 1/2 TPI
- 2 1/2-4：2 1/2 英寸外径，4 TPI
- 3-3 1/2：3 英寸外径，3 1/2 TPI
这只是一个示例表格，实际应用中具体的对照关系可能会有所不同。

还请根据具体情境和标准进行确认。

螺纹钻孔直径对照表公制螺纹公制细牙螺纹55°圆柱内螺纹（Rp)55°圆锥内螺纹（Rc)55°非密封圆柱内螺纹（G)规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小M10.750.7850.729M1*0.20.80.8210.7831/16-28 6.5 6.632 6.491/16-28 6.3 6.384 6.2441/16-28 6.7 6.843 6.561 M2 1.6 1.679 1.567M2*0.25 1.725 1.785 1.7291/8-288.58.6378.4951/8-288.38.3888.2491/8-288.78.8488.566 M3 2.5 2.599 2.459M3*0.35 2.7 2.721 2.6211/4-1911.411.54911.3411/4-191111.17410.9621/4-1911.711.8911.445 M4 3.3 3.422 3.242M4*0.5 3.5 3.599 3.4593/8-1914.915.04514.8463/8-1914.514.65814.4483/8-1915.215.39514.95 M5 4.2 4.334 4.134M5*0.5 4.5 4.599 4.4591/2-1418.618.77318.4891/2-1418.118.26317.9791/2-141919.17218.631 M65 5.153 4.917M6*0.75 5.3 5.378 5.1883/4-142424.25923.9753/4-1423.523.66323.3785/8-142121.12820.587 M76 6.153 5.917M7*0.75 6.3 6.378 6.1881-1130.230.47230.111-1129.629.82229.4593/4-1424.524.65824.117 M8 6.8 6.912 6.647M8*177.153 6.91711/4-1138.839.13338.77111/4-1138.238.33937.9767/8-1428.228.41827.877 M108.58.6768.376M8*0.757.37.3787.18811/2-1144.745.02644.66411/2-114444.23243.8691-1130.630.93130.291 M1210.2510.44110.106M10*1.258.88.9128.6472-1156.556.83756.4752-1155.655.84455.41211/8-1135.235.57934.939 M141212.2111.835M10*199.1538.91711/4-1139.239.59238.952 M161414.2113.835M10*0.759.39.3789.18811/2-114545.48544.845 M1815.515.74415.294M12*1.510.510.67610.37613/4-115151.42850.788 M2017.517.74417.294M12*1.2510.810.91210.6472-115757.29656.656 M2219.519.74419.294M12*11111.15310.917M242121.25220.752M14*1.512.512.67612.376M272424.25223.752M14*1.2512.812.91212.647M3026.526.77126.211M14*11313.15312.917M3329.529.77129.211M16*1.514.514.67614.376M363232.2731.67M16*11515.15314.917M393535.2734.67M18*21616.2115.835M18*1.516.516.67616.376M18*11717.15316.917M20*21818.2117.835M20*1.518.518.67618.376M20*11919.15318.917M22*22020.2119.835M22*1.520.520.67620.376M22*12121.15320.917M24*22222.2121.835M24*1.522.522.67622.376M24*12323.15322.917M27*22525.2124.835M27*1.525.525.67625.376M27*12626.15325.917M30*32727.25226.752M30*22828.2127.835M30*1.528.528.67628.376M30*12929.15328.917M33*33030.25229.752M33*23131.2130.835M33*1.531.531.67631.376M36*33333.25232.752M36*23434.2133.835M36*1.534.534.67634.376M39**33636.25235.752M39*23737.2136.835M39*1.537.537.67637.376螺纹钻孔直径对照表60°圆锥内螺纹（NPT)60°圆柱内螺纹（NPSC)统一螺纹（UNF）统一螺纹（UNC）统一螺纹（UNEF）规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小1/16-27 6.135 6.223 6.0461/8-278.488.88.636N0.0-80 1.25 1.305 1.18N0.1-64 1.5 1.585 1.435N0.12-32 4.722 4.816 4.628 1/8-278.488.5688.3931/4-1811.3511.4711.227N0.1-72 1.55 1.612 1.473N0.2-56 1.78 1.872 1.6941/4-32 5.585 5.679 5.491 1/4-1810.99611.12810.8643/8-1814.7714.914.656N0.2-64 1.85 1.912 1.755N0.3-48 2.14 2.04 1.945/16-327.1727.2677.079 3/8-1814.41614.54814.2841/2-1417.81318.16117.642N0.3-56 2.1 2.197 2.024N0.4-40 2.27 2.385 2.1563/8-328.768.8548.666 1/2-1417.81317.98317.6423/4-1423.12723.49523.297N0.4-48 2.4 2.458 2.271N0.5-40 2.593 2.698 2.4877/16-2810.23710.34310.13 3/4-1423.12723.29722.9571-11.529.05929.48929.266N0.5-44 2.7 2.74 2.551N0.6-32 2.77 2.899 2.651/2-2811.82411.9311.717 1-11.529.05929.26628.85111/4-11.537.78438.25237.991N0.6-40 2.9 3.022 2.817N0.8-32 3.418 3.528 3.3079/16-2413.26513.38813.142 11/4-11.537.78437.99137.57611/2-11.543.8544.32344.06N0.8-36 3.5 3.606 3.401N0.10-24 3.814 3.949 3.685/8-2414.8514.97514.729 11/2-11.543.8544.0643.6462-11.555.8656.36356.07N0.10-32 4.1 4.165 3.967N0.12-24 4.46 4.59 4.3411/16-2416.4416.56316.317 2-11.555.8656.0755.659N0.12-28 4.6 4.724 4.5031/4-20 5.121 5.267 4.9753/4-2017.82117.96717.6751/4-28 5.5 5.588 5.3675/16-18 6.571 6.733 6.4113/16-2019.40919.55519.2635/16-24 6.97.035 6.7913/8-167.9798.1587.87/8-2020.99621.1420.853/8-248.58.6368.3797/16-149.359.559.14915/16-2022.58522.73122.4397/16-209.910.0339.7381/2-1310.79811.01310.5841-2024.17224.31824.0261/2-2011.511.60711.3269/16-1212.913.08112.76111/16-1825.62225.78425.4619/16-1812.913.08112.7615/8-1113.62213.86813.37611/8-1827.2127.37127.0495/8-1814.514.68114.3483/4-1016.56616.83216.29913/16-1828.79728.95928.6363/4-1617.517.67817.337/8-919.45819.74819.16911/4-1830.39430.55530.2337/8-1420.520.67520.261-822.2822.59821.96315/16-1831.9732.13331.811-1223.323.57123.10911/8-724.99825.34924.64813/8-1833.55933.7233.39811/8-1226.526.74626.28411/4-728.17328.52427.82317/16-1835.0735.23334.9111/4-1229.629.92129.45913/8-632.831.1230.34311/2-1836.73436.89636.57313/8-1232.833.09632.63411/2-633.90734.29533.51819/16-1838.1238.48338.1611/2-353636.27135.80913/4-539.3839.8138.9515/8-1839.90940.0739.7482-41/245.14445.59844.689111/16-1841.49741.65841.336。

当之处，应视实际状况适当的变更钻头直径。

本表是依据2级牙制订。

注：迫牙丝攻之钻孔径，在上表所列之数
值，由于被加工 材料之材质、硬度、形状
、尺寸等之影响，多少会有所变动，因此
于参考上表之同时，亦请增减若干。

螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依据市售之标准钻头所选定的。

在使用钻头的情况下，由于钻头的形状及尺寸、精度、被钻孔之材质等，对于所钻孔的尺寸、精度有很大的影响，所以使用本表之钻孔径，若有不。

螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依据市售之标准钻头所选定的。

在使用钻头的情况下，由于钻头的形状及尺寸、精度、被钻孔之材质等，对于所钻孔的尺寸、精度有很大的影响，所以使用本表之钻孔径，若有不
注：迫牙丝攻之钻孔径，在上表所列之数
值，由于被加工 材料之材质、硬度、形状
、尺寸等之影响，多少会有所变动，因此
于参考上表之同时，亦请增减若干。

当之处，应视实际状况适当的变更钻头直径。

本表是依据2级牙制订。

60%100%60%100%60%100%60%100%60%100% M1 ×0.250.750.840.73M1 ×0.20.800.870.78W1/16-60 1.20 1.26 1.05Nr.1-64 1.50 1.60 1.42Nr.0-80 1.30 1.32 1.18 M1.1　×0.250.850.940.83M1.1　×0.20.900.970.88W3/32-48 1.80 1.97 1.70Nr.2-56 1.80 1.89 1.69Nr.1-72 1.60 1.62 1.47 M1.2　×0.250.95 1.040.93M1.2　×0.2 1.00 1.070.98W1/8-40 2.60 2.69 2.36Nr.3-48 2.10 2.17 1.94Nr.2-64 1.90 1.93 1.75 M1.4×0.3 1.10 1.21 1.08M1.4　×0.2 1.20 1.27 1.18W5/32-32 3.10 3.36 2.95Nr.4-40 2.30 2.43 2.16Nr.3-56 2.10 2.22 2.02 M1.6　×0.35 1.25 1.37 1.22M1.6　×0.2 1.40 1.47 1.38W3/16-24 3.60 3.95 3.41Nr.5-40 2.60 2.76 2.49Nr.4-48 2.40 2.50 2.27 M1.7　×0.35 1.35 1.47 1.32M1.8　×0.2 1.60 1.67 1.58W7/32-24 4.50 4.74 4.20Nr.6-32 2.75 2.99 2.65Nr.5-44 2.70 2.80 2.55 M1.8　×0.35 1.45 1.57 1.42M2 ×0.25 1.75 1.84 1.73W1/4-20 5.10 5.37 4.72Nr.8-32 3.50 3.65 3.31Nr.6-40 3.00 3.09 2.82 M2　×0.4 1.60 1.74 1.57M2.2　×0.25 1.95 2.07 1.93W5/16-18 6.50 6.85 6.13Nr.10-24 3.80 4.14 3.68Nr.8-36 3.50 3.71 3.40 M2.2　×0.45 1.75 1.91 1.71M2.5　×0.35 2.15 2.27 2.12W3/8-167.908.317.49Nr.12-24 4.50 4.80 4.34Nr.10-32 4.10 4.31 3.97 M2.3　×0.4 1.90 2.04 1.87M3 ×0.35 2.65 2.77 2.62W7/16-149.309.728.791/4-20 5.10 5.53 4.98Nr.12-28 4.70 4.90 4.50 M2.5　×0.45 2.05 2.21 2.01M3.5　×0.35 3.15 3.27 3.12W1/2-1210.5011.079.995/16-18 6.507.02 6.411/4-28 5.50 5.76 5.37 M2.6　×0.45 2.15 2.31 2.11M4 ×0.5 3.50 3.68 3.46W9/16-1212.0012.6611.583/8-167.908.497.815/16-24 6.907.25 6.79 M3 ×0.5 2.50 2.68 2.46M4.5　×0.5 4.00 4.18 3.96W5/8-1113.5014.1012.927/16-149.309.939.153/8-248.508.848.38 M3 ×0.6 2.40 2.61 2.35M5 ×0.5 4.50 4.68 4.46W3/4-1016.5017.1015.801/2-1310.8011.4310.587/16-209.9010.299.74 M3.5　×0.6 2.90 3.11 2.85M5.5　×0.5 5.00 5.18 4.96W7/8-919.2520.0618.619/16-1212.2012.9112.001/2-2011.5011.8811.33 M4 ×0.7 3.30 3.55 3.24M6 ×0.5 5.50 5.68 5.46W1-822.0022.9621.335/8-1113.5014.3813.389/16-1812.9013.3712.76 M4 ×0.75 3.25 3.51 3.19M6 ×0.75 5.25 5.51 5.19W11/8-724.7525.7923.933/4-1016.5017.4016.305/8-1814.5014.9614.35 M4.5　×0.75 3.75 4.01 3.69M7 ×0.75 6.25 6.51 6.19W11/4-727.7528.9627.107/8-919.5020.3919.173/4-1617.5018.0217.33 M5 ×0.8 4.20 4.48 4.13M8 ×0.757.257.517.19W13/8-630.2031.6729.501-822.2523.3421.967/8-1420.2521.0520.26 M5 ×0.9 4.10 4.70 4.66M8 ×1.07.007.35 6.92W11/2-633.5034.8532.6811/4-728.0029.3927.821-1223.2524.0323.11 M6 ×1.0 5.00 5.35 4.92M9 ×1.08.008.357.92W15/8-535.5037.3734.7713/8-631.0032.1830.3411/8-1226.5027.2026.28 M7 ×1.0 6.00 6.35 5.92M10　×0.759.259.519.19W13/4-538.5040.5537.9411/2-634.5035.3533.5211/4-1229.5030.3829.46 M8 ×1.25 6.807.19 6.65M10　×1.09.009.358.92W17/8-4.541.5043.2940.4013/4-539.0041.1538.9513/8-1232.5033.3532.63 M9　×1.257.808.197.65M10　×1.258.759.198.65W2-4.544.5046.4643.572-4.545.0047.1344.6911/2-1236.0036.7335.81 M10 ×1.58.509.038.38M11　×1.010.0010.359.92M11 ×1.59.5010.039.38M12　×0.7511.2511.5111.19M12 ×1.7510.2010.8610.11M12　×1.011.0011.3510.92M14 ×2.012.0012.7011.83M12　×1.2510.7511.1910.65M16　×2.014.0014.7013.83M12　×1.510.5011.0310.38M18 ×2.515.5016.3815.29M14　×1.013.0013.3512.9260%100%60%100%60%100% M20 ×2.517.5018.3817.29M14　×1.2512.7513.1912.65W1/16-60 1.40 1.42 1.32Nr.1-64 1.70 1.73 1.64Nr.0-80 1.40 1.42 1.35 M22 ×2.519.5020.3819.29M14　×1.512.5013.0312.38W3/32-48 2.10 2.18 2.04Nr.2-56 2.00 2.04 1.94Nr.1-72 1.70 1.74 1.66 M24 ×3.021.0022.0520.75M15　×1.014.0014.3513.92W1/8-40 2.85 2.93 2.77Nr.3-48 2.25 2.34 2.23Nr.2-64 2.00 2.06 1.97 M27 ×3.024.0025.0523.75M15　×1.2513.7514.1913.65W5/32-32 3.55 3.66 3.46Nr.4-40 2.55 2.64 2.50Nr.3-56 2.30 2.37 2.27 M30　×3.526.5027.7326.21M15　×1.513.5014.0313.38W3/16-24 4.25 4.36 4.08Nr.5-40 2.90 2.97 2.83Nr.4-48 2.60 2.67 2.56 M33　×3.529.5030.7329.21M16　×1.015.0015.3514.92W7/32-24 5.05 5.15 4.88Nr.6-32 3.15 3.25 3.08Nr.5-44 2.90 2.99 2.86 M36 ×4.032.0033.4031.67M16　×1.2514.7515.1914.65W1/4-20 5.75 5.86 5.54Nr.8-32 3.80 3.91 3.74Nr.6-40 3.20 3.30 3.16 M39 ×4.035.0036.4034.67M16　×1.514.5015.0314.38W5/16-187.307.407.03Nr.10-24 4.35 4.48 4.25Nr.8-36 3.85 3.94 3.78 M42 ×4.537.5039.0837.13M18　×1.017.0017.3516.92W3/8-168.808.928.51Nr.12-24 5.00 5.14 4.91Nr.10-32 4.45 4.57 4.40 M45　×4.540.5042.0840.13M18　×1.2516.7517.1916.65W7/16-1410.3010.429.951/4-20 5.75 5.94 5.66Nr.12-28 5.05 5.19 4.99 M48 ×5.043.0044.7542.59M18　×1.516.5017.0316.38W1/2-1211.7511.8911.345/16-187.307.487.171/4-28 5.95 6.06 5.86 M52 ×5.047.0048.7546×59M18　×2.016.0016.7015.833/8-168.809.018.675/16-247.407.597.36 M56 ×5.550.5052.4350.05M20　×1.019.0019.3518.927/16-1410.3010.5210.133/8-249.009.188.95 M60 ×5.554.5056.4354.05M20　×1.2518.7519.1918.651/2-1311.8012.0711.641/2-2012.1012.2912.01 M64 ×658.0060.1057.50M20　×1.518.5019.0318.38M68 ×662.0064.1061.50M20　×2.018.0018.7017.83PT(Rc)PS(Pp)PF(G)M72　×666.0068.1065.50M22　×1.021.0021.3520.92下孔径下孔径下孔径M76 ×670.0072.1069.50M22　×1.2520.7521.1920.651/16-28 6.30 6.50 6.70英时英时//公 对照表无屑丝攻美制细牙螺纹无屑丝攻美制细牙螺纹((UNFUNF))规格规格规格规格公制粗牙螺纹公制粗牙螺纹((M)下孔径(%)下孔径规格公制细牙螺纹公制细牙螺纹((M)下孔径下孔径(%)无屑丝攻英制粗牙螺纹无屑丝攻英制粗牙螺纹((W)规格规格英制管牙螺纹无屑丝攻美制粗牙螺纹无屑丝攻美制粗牙螺纹((UNCUNC))针车牙螺纹针车牙螺纹((SMSM))英制粗牙螺纹英制粗牙螺纹((W)下孔径下孔径(%)规格美制细牙螺纹美制细牙螺纹((UNFUNF))下孔径下孔径(%)规格螺丝攻下孔径对照表下孔径下孔径(%)下孔径下孔径(%)下孔径下孔径(%)美制粗牙螺纹美制粗牙螺纹((UNCUNC))下孔径下孔径(%)M22　×1.520.5021.0320.381/8-288.308.608.70M22　×2.020.0020.0719.831/4-1911.0011.5011.7060%100%M24　×1.023.0023.3522.923/8-1914.5015.0015.25SM1/16-80 1.30 1.34 1.181/16M24　×1.2522.7523.1922.651/2-1418.1018.5019.00SM5/64-64 1.60 1.68 1.473/32M24　×1.522.5023.0322.385/8-1421.00SM3/32-100 2.15 2.18 2.051/860%100%M24　×2.022.0022.7021.833/4-1423.5024.0024.50SM3/32-56 1.90 2.03 1.795/32M1×0.250.900.920.86M25　×1.024.0024.1923.927/8-1428.00SM1/8-44 2.55 2.73 2.4311/64M1.1×0.25 1.00 1.020.96M25　×1.523.5024.0323.381-1129.6030.2530.50SM1/8-40 2.50 2.68 2.353/16M1.2×0.25 1.10 1.12 1.06M25　×2.023.0023.7022.8311/8-1135.50SM9/64-40 2.90 3.08 2.757.32M1.4×0.3 1.25 1.30 1.24M26　×1.524.5025.0324.3811/4-1138.1039.0039.50SM11/64-40 3.70 3.87 3.5415/64M1.6×0.35 1.45 1.49 1.41M27　×1.026.0026.3525.9211/2-1144.0044.9045.00SM3/16-32 3.95 4.14 3.731/4M1.7×0.35 1.55 1.59 1.51M27　×1.525.5026.0325.3813/4-1151.00SM3/16-28 3.80 4.06 3.589/32M1.8×0.35 1.65 1.69 1.61M27　×2.025.0025.7024.832-1155.6056.6057.00SM7/32-32 4.70 4.94 4.535/16M2×0.4 1.80 1.87 1.78M28　×1.526.5027.0326.38SM15/64-28 5.00 5.25 4.773/8M2.2×0.45 2.00 2.05 1.96M28　×2026.0026.7025.83SM1/4-40 5.70 5.86 5.537/16M2.3×0.4 2.10 2.17 2.08M30　×1.029.0029.3528.92SM1/4-28 5.40 5.64 5.171/2M2.5×0.45 2.30 2.35 2.26M30　×1.528.5029.0328.38SM1/4-24 5.25 5.53 4.989/16M2.6×0.45 2.40 2.45 2.36M30　×2.028.0028.7027.83NPT SM9/32-28 6.20 6.44 5.975/8M3×0.5 2.75 2.84 2.73M32　×1.530.5031.0330.38下孔径SM9/32-20 5.80 6.15 5.4911/16M3.5×0.6 3.20 3.31 3.18M33　×1.531.5032.0331.381/16-27 6.20SM5/16-287.007.23 6.673/4M4×0.7 3.65 3.77 3.62M33　×2.031.0031.7030.831/8-278.50SM5/16-24 6.857.11 6.567/8M4.5×0.75 4.15 4.26 4.09M33　×3.030.0031.5029.751/4-1811.00SM5/16-18 6.50 6.84 6.101M5×0.8 4.60 4.74 4.57M35　×1.533.5034.0333.383/8-1814.50SM3/8-288.558.828.3511/8M6×1.0 5.50 5.68 5.46M36　×1.534.5035.0334.381/2-1418.00SM3/8-188.058.437.6911/4M7×1.0 6.50 6.68 6.46M36　×2.034.0034.7033.833/4-1423.00SM7/16-2810.1510.419.9313/8M8×1.257.357.597.32M36　×3.033.0034.0532.751-111/２29.00SM7/16-169.409.889.0511/2M9×1.258.408.598.32M38　×1.536.5037.0336.3811/4-111/２38.00SM1/2-2811.7511.9911.5215/8M10×1.59.259.519.19M39　×1.537.5038.0337.3811/2-111/２44.00SM1/2-2011.3511.7111.0513/4M12×1.7511.1011.4311.05M39　×2.037.0037.7036.832-111/３56.00SM1/2-1210.4011.059.9517/8M39　×3.036.0037.0535.7521/265.892M40　×1.538.5039.0338.38M40　×2.038.0038.7037.83M40　×3.037.0038.0536.75M42　×1.540.5041.0340.3860%100%M42　×2.040.0040.7039.83Pg7 -2011.4011.6911.08M42　×3.039.0040.0538.75Pg9 -1814.0014.3313.66M42　×4.038.0040.7037.66Pg11 -1817.2517.7317.06M45　×1.543.5044.0343.38Pg13.5　-1819.0019.5318.86M45　×2.043.0043.7042.83Pg16 -1821.2521.6320.96M45　×3.042.0043.0541.75Pg21 -1626×7527.2426.48M45　×4.041.0042.4040.67Pg29 -1635.5035.9435.18M48　×2.046.0046.7045.83Pg36 -1645.5045.9445.18M48　×3.045.0046.0544.75Pg42 -1652.5052.9452.08M48　×4.044.0045.4043.67Pg48 -1657.5058.2457.48M50　×1.548.5049.0348.38M50　×2.048.0048.7047.83M50　×3.047.0048.0546.75M52　×1.550.5051.0350.38M52　×2.050.0050.7049.83M52　×3.049.0050.0548.7567.4622.225025.400028.575050.800047.625041.275044.450038.100034.925031.750014.287515.875017.462519.0500美制管牙螺纹无屑丝攻公制粗牙螺纹无屑丝攻公制粗牙螺纹((M )Pg Pg钢管牙钢管牙规格规格规格下孔径下孔径(%)56.4044.45下孔径下孔径(%)规格下孔径下孔径(%)12.70004.36563.96883.17501.587538.1029.4023.4018.1514.7011.158.756.35下孔径NPS 11.112512.70009.52507.93757.14386.35005.95315.55635厘7厘半1分1分2厘半--1分半1分7厘半2.3813--2分2分2厘半2分半3分3分半4分4分半5分5分半6分7分1吋1吋1分1吋2分1吋3分2吋1吋4分1吋5分1吋6分1吋7分。

螺丝攻牙钻孔径和滚造径对照表螺丝攻牙钻孔径和滚造径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻规格（UN标准2级牙钻最大最小最大最小M1.0×0.25 0.70.70.7NO.1-1.51.5 1.4 M1.1×0.25 0.80.80.8NO.2-1.81.8 1.6 M1.2×0.25 0.90.90.9NO.3-2.12.1 1.9 M1.4×0.3 1.1 1.1 1.0NO.4-2.32.3 2.1 M1.6×0.35 1.2 1.3 1.2NO.5-2.62.6 2.4 M1.7×0.35 1.3 1.4 1.3NO.6-2.82.8 2.6 M1.8×0.35 1.4 1.5 1.4NO8- 3.43.5 3.3 M2.0×0.4 1.6 1.6 1.5NO.1 3.93.9 3.6 M2.2×0.45 1.7 1.8 1.7NO.1 4.54.5 4.3 M2.3×0.4 1.9 1.9 1.81/4- 5.15.2 4.9 M2.5×0.45 2.1 2.1 2.05/16-6.66.7 6.4 M2.6×0.45 2.2 2.2 2.13/8-8.08.17.7 M3.0×0.5 2.5 2.5 2.47/16-9.49.59.1 M3.0×0.6 2.4 2.4 2.21/2-10.11.10. M3.5×0.6 2.9 3.0 2.89/16-12.12.11. M4.0×0.7 3.3 3.4 3.25/8-13.12.13. M4.0×0.75 3.2 3.3 3.13/4-16.18.16. M4.5×0.75 3.8 3.8 3.67/8-9 19.19.19. M5.0×0.8 4.2 4.3 4.1 1 22.22.21. M5.0×0.9 4.1 4.1 3.91-25.25.24. M6.0×1.0 5.0 5.1 4.91-28.28.27. M7.0×1.0 6.0 6.1 5.91-30.31.30. M8.0×1.25 6.8 6.9 6.61-34.34.33. M9.0×1.25 7.87.97.61-39.39.38. M10×1.5 8.58.68.32-4-45.45.44. M11×1.5 9.59.69.3M12×1.75 10.10.10.M14×2.0 12.12.11.M16×2.0 14.14.13.M18×2.5 15.15.15.M20×2.5 17.17.17.M22×2.5 19.19.19.M24×3.0 21.21.20.M27×3.0 24.24.23.M30×3.5 26.26.26.M16丝孔钻14。

螺纹下孔径表
註(1)M1.4以下等級：5H、M1.6以上等級：6H
(2)基於JIS B 0209-1982標準
螺纹下孔径表
螺纹下孔径表
(2)基於JIS B 0211-1982標準螺纹下孔径表
螺纹下孔径表
螺纹下孔径表
螺纹下孔径表
螺纹下孔径表。

螺纹下孔径表
上述钻头直径來源於美制管用耐密斜行螺纹ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準。

螺纹下孔径表(無屑絲攻用)
螺纹下孔径表(無屑絲攻用)
螺纹下孔径表(無屑絲攻用)
螺纹下孔径表(無屑絲攻用)
螺纹下孔径表(護套螺纹用)
螺纹下孔径表(護套螺纹用)
螺纹下孔径表(護套螺纹用)
各 種 換 算 表
管用螺絲基準寸法(mm)。